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promotional pen,promotion pen,promotional ball pen 1.The brightness of LED flashlight bulb is 1300-1500MCD,Which conforms to the medical standard.AG3 button battery that can last long time used. 2.Gel pen refill with large capacity can wrtie for 1300M. 3.The screw design on the pen cap makes the cap hard to fall. 4.Solid wide metal clip.And large space for advertisement. 5.It is convenient to take and hard to lose with the lanyard.